grub> setup (hd0) Checking if "/boot/grub/stage1" exists... no Checking if "/grub/stage1" exists... no

Error 15: File not found

EDIT: OK, I spotted the obvious - partition 0 is FAT. I tried "root (hd0,1)" instead, and then the setup part gave some output that looked promising (can't paste it now, I've since rebooted). However, now when trying to boot from the pendrive I get "GRUB Hard Disk Error". At least I get three more words out of it before everything grinds to a halt. Any more suggestions?